javascript - jQuery Check user's input before form submission -

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i'm trying validate user's input before submit form. although i'm successful doing when hit button, somehow couldn't make stop when press enter key:

html:

   <form method='post' class='submit_form' action="<?php echo base_url();?>interview/reserve_temporary">         <input type="text" class="form-control email_input" id="reserve_email_2" placeholder="email">         <button type="button" id="subscribe_2" class="btn btn-default text-center foot-submit-btn subscribe_button">let me try</button>    </form>

js:

  $('.submit_form').submit(function(e) {         var email = $(this).find('.email_input').val();       var id=$(this).find('.subscribe_button').attr('id').split("_").pop();         var regex_email = /^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-za-z\-0-9]+\.)+[a-za-z]{2,}))$/;        if (regex_email.test(email)||email.match(/^\d+$/)) {           $(this).text('sending……');       }       else {           return false;       }  }

give shot:

$('.submit_form').submit(function(e) {       var email = $(this).find('.email_input').val();     var id=$(this).find('.subscribe_button').attr('id').split("_").pop();       var regex_email = /^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-za-z\-0-9]+\.)+[a-za-z]{2,}))$/;      if (regex_email.test(email)||email.match(/^\d+$/)) {         $(this).text('sending……');         return true     }     else {         e.preventdefault();         e.stopimmediatepropagation();         return false;     } }

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